Construction of cans.



1. G. HODGSON. c'qnsaucnom or cms. APPLICATION FILED. -IIAY 2l. ll9l4.

Patented Sept. 16, 1919.

entrenan@ JOHN e. Honeson, on'mirwoon, immers, .assassina 'ro enmarcan can confirmar, or new Yoan, n. Y., n conronefrron or naw Jnnsnv.

1,316,232', Q cication of Letters Eatent.

.application sled may ai, 1911i.

To all whom it may concern Be it known that l, Sonn G. Hooesonta citizen of the United States, residfng in -Maywood, in the county of Cook and State of parts and devices hereinafter more fully set lforth and made the subject matter of claims.

ln the accompanying drawing which forms a part of this specication, Figure l represents an extended View oi the body blank out of which the can body is to be formed. Fig. 2 shows said .body blank formed up into a cylinder. Fig. 3 shows said cylinder anged. Fig. 4 is a sectional View ofthe can body and the can head. Fig. 5 is a fragmentary, enlarged section on the line 5-5 of Fig. 2. Fig. 6 is a fragmentary, enlarged section on the line 6-6 oi' Fig. 2.

For some excellent reasons, 'well enden y stood by those skilled in the art, it has been long known that in the manufacture of sheet metal food containers, such as packers cans, it is extremely desirable to employ what is known as a lock side seam, that is to say, a hooked side seam for the can bodies, such. a seam as is illustrated in Fig. 6. Where these can bodies are to be .tlanged at one or both ends, it is found necessary to have the seam at this point of single, instead of double, thickness, in other words, a lap seam as illustrated in Fig. 5. lt has also been found desirable to better accommodate the subse-- quent operation of rolls in the double seam ing of the head to the can that the lapped portion of the seam shall be diagonal in posit-ion instead of parallel to the anis of the can. This is, because, for one reason, the seeming rolls ri e more easily over the lapped seam if it lies'diagonally to their path, just as a vehicle rides more easily over a rail that lies diagonally in its road than 1trides over one that lies squarely across its path, as will be readily understood. When the two parts ci the lapped portion ofthe seam are soldered together, which is done before the anging taires place, and thus joined parts are lient into the ange, there is ententes sept. is, isis.

Serial No. e.

a tendency of one of the parts slipping upon the other in bending.l This movement must take place of course and it is permitted by the stretching of the solder of the lapped part of the `ioint. And since the adhesion onf-the solder must be greater than the power required to stretch the solder, it has been ound desirable to make the lapped part of 'the seam as narrow es possible in order that blank the upper and lower edges are formed.

with the inwardly inclined notches C, C, and the 'other end with the outwardly inclined notches D, E. The outwardly inclined .notches l) are further provided with incisions E, E, nia-de, at a distance from the edges, equal to the extent ci the' desired ange. When the pieces l5, B are formed into oppositely disposed hooks and the blank bent into the forni of a cylinder with the` hooks joined. together, as indicated in Fig. 2, that portion of the same becomes, as indi cated, a diagonal lap, as shown at F, F. The seam thus :formed is then soldered, after which, a flange G is formed at each end, the

'bend being at the weakened point or incision E. In the manufacture of the can the next step is the application of the heads double seeming of one or both to the cans in the usual way.

l. The lock and lap seam for uniting the ends or" sheet metal blanks to. form can bodies, the lap portion of said seam having a weakened place coincident with which is to be formed the bend near the end of the can body to produce the flange which is to be seamed with the can head, the weakened place being located between the inner'and outer ends of the lap portion and'which eX- tends transversely to the line of the body seam.

2. A 7clank for the formation oi' a sidegunned and end-anged cfm body, having the @nd-Seann por'mns winch are to lap each @they mit on substantially para .mchned hues, said portions :JL an end of the blank being formed wzh incisions maimed im@ mamita pns between the ends of the lndnei;

Signe this 19th Gay of May, 1914, n the Messung of two subscmbmg wltnesses.

JUHN G. HODGSUN.

sv'vnfasses H. MUNDAY, THOLMS OBRIEN. 

